DF04S-HF Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF04S-HF is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 400 V peak reverse voltage and 1 A average rectified current. This component is designed for surface mount applications in 4-SMD, Gull Wing package configuration. The part maintains Active product status with 729 units currently in stock.

Substitute parts become necessary when the DF04S-HF reaches end-of-life status, when alternative packaging formats are required, or when sourcing from different manufacturers is mandated by supply chain requirements. The substitute parts listed below maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

DF04S-HF

Comchip TechnologyIn Stock: 754DF04S-HF Datasheet

Current PartRFQ

DB104S-G

Comchip TechnologyIn Stock: 1569DB104S-G Datasheet

Parametric EquivalentRFQ

DF04S-G

Comchip TechnologyIn Stock: 1502DF04S-G Datasheet

Parametric EquivalentRFQ

DF04S-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 5496DF04S-E3/45 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF04S-HF is determined by strict equivalence across the following critical parameters:

• Voltage - Peak Reverse (Max): 400 V (exact match required)
• Current - Average Rectified (Io): 1 A (exact match required)
• Diode Type: Single Phase (exact match required)
• Technology: Standard (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: 4-SMD, Gull Wing (exact match required)
• Operating Temperature Range: -55°C to 150°C (TJ) (exact match required)

All substitute parts listed below satisfy these electrical and mechanical requirements. Variations in Current - Reverse Leakage @ Vr and product status do not disqualify substitution eligibility when all primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

DF04S-E3/45 (Vishay General Semiconductor - Diodes Division)

This substitute part is recommended as the primary alternative to DF04S-HF. The DF04S-E3/45 maintains Active product status, ensuring long-term availability and continued manufacturer support. All electrical parameters match the main part specification exactly, with the exception of Current - Reverse Leakage @ Vr, which is 5 µA compared to 10 µA in the DF04S-HF. This represents improved leakage performance. The part carries ROHS3 compliance, MSL rating of 1 (Unlimited), and REACH Unaffected status. Inventory availability is substantial at 5400 units.

DB104S-G (Comchip Technology)

This substitute maintains full electrical and mechanical equivalence to DF04S-HF. However, DB104S-G carries Obsolete product status, indicating discontinued manufacturer support and limited long-term availability. This part is suitable for applications requiring immediate substitution when DF04S-HF stock is depleted, but should not be selected for new designs or long-term production requirements. Current inventory is 1511 units.

DF04S-G (Comchip Technology)

This substitute maintains full electrical and mechanical equivalence to DF04S-HF. DF04S-G carries Obsolete product status, indicating discontinued manufacturer support. This part is suitable for applications requiring immediate substitution when DF04S-HF stock is depleted, but should not be selected for new designs or long-term production requirements. Current inventory is 1425 units.

Frequently Asked Questions (FAQ)

Q: Can DF04S-E3/45 be used as a direct replacement for DF04S-HF?

A: Yes. DF04S-E3/45 meets all electrical and mechanical requirements for direct substitution. The part maintains identical voltage, current, temperature range, and package specifications. The lower reverse leakage current (5 µA versus 10 µA) represents improved performance characteristics.

Q: What is the difference between DB104S-G and DF04S-G?

A: Both parts are electrically and mechanically equivalent to DF04S-HF. The primary difference is the supplier device package designation: DB104S-G uses DBS package designation while DF04S-G uses DFS package designation. Both are manufactured by Comchip Technology and carry Obsolete product status.

Q: Why is DF04S-E3/45 preferred over the Comchip alternatives?

A: DF04S-E3/45 maintains Active product status, ensuring continued manufacturer support and long-term availability. The Comchip alternatives (DB104S-G and DF04S-G) are marked Obsolete, indicating discontinued production. For new designs and long-term production requirements, Active status parts are preferred.

Q: Are there packaging differences between these substitute parts?

A: All substitute parts use identical 4-SMD, Gull Wing package configuration. The main part DF04S-HF is supplied in standard packaging, while substitute parts DB104S-G, DF04S-G, and DF04S-E3/45 are supplied in Tube packaging. This packaging difference does not affect electrical or mechanical compatibility.

Q: What compliance certifications apply to these substitute parts?

A: All substitute parts carry ROHS3 compliance, MSL rating of 1 (Unlimited), and REACH Unaffected status. All parts share ECCN classification EAR99 and HTSUS code 8541.10.0080 with the main part.

Q: Can DF04S-HF be substituted with DB104S-G or DF04S-G in production?

A: Electrical and mechanical substitution is possible. However, both parts carry Obsolete status, indicating limited future availability. These parts are suitable for short-term substitution needs only. For ongoing production, DF04S-E3/45 is the recommended choice due to Active status.

Q: What is the significance of Current - Reverse Leakage differences?

A: DF04S-E3/45 exhibits 5 µA reverse leakage at 400 V, compared to 10 µA for DF04S-HF and other substitutes. Lower reverse leakage represents improved performance and reduced power dissipation in standby conditions. This difference does not prevent substitution but indicates enhanced characteristics in the Vishay part.